CN110898450A - Device and method for potassium perchlorate mother liquor evaporation concentration process - Google Patents
Device and method for potassium perchlorate mother liquor evaporation concentration process Download PDFInfo
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- CN110898450A CN110898450A CN201911285826.6A CN201911285826A CN110898450A CN 110898450 A CN110898450 A CN 110898450A CN 201911285826 A CN201911285826 A CN 201911285826A CN 110898450 A CN110898450 A CN 110898450A
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- water
- mother liquor
- circulating water
- water source
- heat pump
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000012452 mother liquor Substances 0.000 title claims abstract description 49
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 title claims abstract description 47
- 229910001487 potassium perchlorate Inorganic materials 0.000 title claims abstract description 47
- 238000001704 evaporation Methods 0.000 title claims abstract description 32
- 230000008020 evaporation Effects 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 298
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000001103 potassium chloride Substances 0.000 claims abstract description 20
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 20
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 12
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 19
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 8
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000004224 protection Effects 0.000 description 5
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 4
- 239000008234 soft water Substances 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- YZHUMGUJCQRKBT-UHFFFAOYSA-M sodium chlorate Chemical compound [Na+].[O-]Cl(=O)=O YZHUMGUJCQRKBT-UHFFFAOYSA-M 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
- B01D1/0041—Use of fluids
- B01D1/0047—Use of fluids in a closed circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
Abstract
The invention discloses a device for an evaporation concentration process of potassium perchlorate mother liquor, which comprises a water source side circulating water passage and a use side circulating water passage main passage; the water source side circulating water passage sequentially passes through a potassium chloride dissolving tank, a water cooling tower, a water cooling tank, a pressurized water pump, a sodium chlorate electrolysis intermediate liquid heat exchanger and a water source heat pump evaporator and then returns to the potassium chloride dissolving tank to complete the circulation of the water passage; the main path of the using side circulating water path sequentially passes through a hot water intermediate tank, a hot water intermediate tank pump, a water source heat pump condenser and a potassium perchlorate mother liquor evaporator and then returns to the hot water intermediate tank to complete circulation of the water path; a using side circulating water passage branch for communicating the two devices is arranged between the water source heat pump condenser and the hot water intermediate tank; and the water source heat pump evaporator exchanges heat with a water source in the water source heat pump condenser. The process has the characteristics of short flow, less investment, small occupied area and low energy consumption, saves more than 80 percent of energy compared with the traditional process, and is a new energy-saving and environment-friendly process.
Description
Technical Field
The invention relates to the field of potassium perchlorate preparation processes, in particular to a device and a process method for a potassium perchlorate mother liquor evaporation concentration process.
Background
The perchlorate mother liquor is evaporated and concentrated, and sodium chloride in the perchlorate mother liquor is recovered to be used for preparing sodium chlorate by electrolysis of a sodium chlorate cell, so that the perchlorate mother liquor is a national rigid requirement for environmental protection and standard reaching of the perchlorate industry. The mother liquor evaporation adopts a low-temperature high-vacuum evaporator, the required heat source generally gets heat from a sodium chlorate electric tank reactor, but for enterprises who produce potassium perchlorate by using sodium chlorate, the reaction heat of the sodium chlorate electric tank simultaneously satisfies the heat supply of sodium chlorate evaporation and potassium perchlorate mother liquor evaporation, the difference is about 30 percent of heat, and the traditional process is as follows: steam produced by a steam boiler or high-temperature hot water produced by a hot water boiler is used as a heating source of potassium perchlorate evaporation mother liquor; and some enterprises adopt MVR technology to recover compressed secondary steam as an evaporation heating heat source. The coal-fired steam furnace has large investment, large occupied area, long flow, high energy consumption and need of special equipment; in the investment of the electric heating steam boiler, the full automation and high energy consumption need special equipment; the electric water heater has small investment, full automation and high energy consumption; the MVR has large investment, long flow, needs steam during initial driving, but has low energy consumption. The evaporation process has the advantages of short flow, low investment, small occupied area and low energy consumption.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the device and the process method for the potassium perchlorate mother liquor evaporation concentration process, which have the characteristics of short flow, less investment, small occupied area and low energy consumption, save more than 80% of energy compared with the traditional process, and are energy-saving and environment-friendly.
The invention firstly provides a device for potassium perchlorate mother liquor evaporation concentration process, which comprises a water source side circulating water passage and a use side circulating water passage main passage; the water source side circulating water passage sequentially passes through a potassium chloride dissolving tank, a water cooling tower, a water cooling tank, a pressurized water pump, a sodium chlorate electrolysis intermediate liquid heat exchanger and a water source heat pump evaporator and then returns to the potassium chloride dissolving tank to complete the circulation of the water passage; the main path of the using side circulating water path sequentially passes through a hot water intermediate tank, a hot water intermediate tank pump, a water source heat pump condenser and a potassium perchlorate mother liquor evaporator and then returns to the hot water intermediate tank to complete circulation of the water path; a using side circulating water passage branch for communicating the two devices is arranged between the water source heat pump condenser and the hot water intermediate tank; and the water source heat pump evaporator exchanges heat with a water source in the water source heat pump condenser.
The invention also provides the following optimization scheme:
preferably, a temperature sensor is arranged on a pipeline between the water source heat pump evaporator and the potassium chloride dissolving tank.
Preferably, a temperature sensor is arranged on a pipeline between the water source heat pump condenser and the potassium perchlorate mother liquor evaporator.
Preferably, a thermometer, a flowmeter and a pressure gauge are arranged on the water source side circulating water passage.
Preferably, the main path of the use-side circulating water passage is provided with a thermometer, a flowmeter, and a pressure gauge.
The invention also provides a process method of the device for the potassium perchlorate mother liquor evaporation concentration process, which uses the device for the potassium perchlorate mother liquor evaporation concentration process and comprises the following steps:
s1, absorbing the circulating water in the water source side circulating water passage from a cold water pool, entering a sodium perchlorate electrolysis intermediate liquid heat exchanger through a pressure water pump for heat exchange and temperature rise, entering a water source heat pump evaporator for temperature reduction, then returning to a potassium chloride dissolving tank for further temperature reduction, entering a cold water tower for cooling, and then returning to the cold water pool for completing primary circulation of the water source side circulating water passage;
opening a using side circulating water passage branch, sending circulating water from the hot water intermediate tank to the water source heat pump condenser through the hot water pump, heating, and then sending the circulating water back to the hot water intermediate tank to circularly heat to a specified temperature;
s2, closing the branch of the using side circulating water passage, and opening the main path of the using side circulating water passage to make the circulating water return to the hot water intermediate tank along the hot water intermediate tank, the hot water intermediate tank pump, the water source heat pump condenser and the potassium perchlorate mother liquor evaporator to complete the circulation of the water passage;
s3, after the temperature of the condensed water in the main path of the using side circulating water path is reduced to a specific temperature, the main path of the using side circulating water path is closed, and a branch of the using side circulating water path is opened;
s4 loops through steps S1-S3.
Preferably, the specified temperature described in the step of S1 is 70 ℃.
Preferably, the specific temperature described in step S3 is 60 ℃.
The invention has the beneficial effects that:
1. the low-grade waste heat of the cooling water of the sodium perchlorate electric tank is fully utilized as a heat source to prepare hot water, and then the hot water is used for preheating a potassium chloride solution and finally returns to the water cooling tower to be cooled, so that the temperature of circulating water is reduced while two-stage heat taking is carried out, the load of the water cooling tower is reduced, and the cooling water of the low-grade heat source sodium perchlorate electric tank is fully utilized.
2. The potassium perchlorate mother liquor evaporator adopts a low-temperature high-vacuum evaporator, uses high-temperature hot water as heating energy, and has moderate energy grade and low cost.
3. The process adopts a novel heat pump technology to take heat from a low-temperature heat source, improves the heating return water temperature of the evaporator, and is used for heating and evaporating materials with the evaporating temperature lower than 90 ℃. The process has the characteristics of short flow, less investment, small occupied area and low energy consumption, saves more than 80 percent of energy compared with the traditional process, and is a new energy-saving and environment-friendly process.
4. Compared with the steam production of a boiler, the device for the potassium perchlorate mother liquor evaporation concentration process for preparing hot water by using the high-temperature water source heat pump greatly reduces CO2And (4) discharging.
5. The energy efficiency ratio of the unit reaches 5.44, namely the heat generated by 1KWH electricity consumed by the high-temperature water source heat pump unit is equivalent to the heat generated by 5.44KWH electricity, so that the energy consumption of the unit is only 18.4% of that of an electric heating evaporation boiler or an electric heating water boiler, and the energy-saving effect is very obvious.
Drawings
FIG. 1 is a diagram of an apparatus for an evaporative concentration process of a potassium perchlorate mother liquor according to a preferred embodiment of the invention;
the specific reference numerals are:
1, a potassium chloride dissolving tank; 2, a water cooling tower; 3, a cold water pool; 4, a pressurized water pump; 5 sodium chlorate electrolysis intermediate solution heat exchanger; 6 water source heat pump evaporator; 7 water source heat pump condenser; 8 hot water intermediate tank pump; 9 hot water intermediate tank; 10 potassium perchlorate mother liquor evaporator.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
The invention firstly provides a device for potassium perchlorate mother liquor evaporation concentration process, which comprises a water source side circulating water passage and a use side circulating water passage main passage; the water source side circulating water passage sequentially passes through a potassium chloride dissolving tank 1, a water cooling tower 2, a water cooling pool 3, a pressure water pump 4, a sodium chlorate electrolysis intermediate liquid heat exchanger 5 and a water source heat pump evaporator 6 and then returns to the potassium chloride dissolving tank 1 to complete the circulation of the water passage; the main path of the using side circulating water path sequentially passes through a hot water intermediate tank 9, a hot water intermediate tank pump 8, a water source heat pump condenser 7 and a potassium perchlorate mother liquor evaporator 10 and then returns to the hot water intermediate tank 9 to complete the circulation of the water path; a using side circulating water passage branch for communicating the two devices is arranged between the water source heat pump condenser 7 and the hot water intermediate tank 9; the water source heat pump evaporator 6 exchanges heat with a water source in a water source heat pump condenser 7.
The water source side circulating water passage is characterized in that circulating water with the temperature of about 20 ℃ from a pressurized water pump 4 of a water cooling tower 2 enters a sodium perchlorate electrolysis intermediate liquid heat exchanger 5 for indirect heat exchange, the water temperature is increased to 40-45 ℃, the circulating water enters a water source heat pump evaporator 6 of a water source heat pump unit, the water temperature is reduced to 34-39 ℃ after the circulating water is absorbed by a refrigerating medium, the circulating water enters a potassium chloride dissolving tank 1 for preheating a potassium chloride solution, the circulating water further cools the potassium chloride solution, then enters the water cooling tower 2, is cooled to about 20 ℃, returns to a water cooling tank 3 and is sent to the sodium perchlorate electrolysis intermediate liquid heat exchanger 5 by the pressurized water.
The main path of the using side circulating water passage is that soft water in a hot water intermediate tank 9 is sent into a water source heat pump condenser 7 by a hot water intermediate tank pump 8, the temperature is increased by 10 ℃ after absorbing the heat of a refrigeration medium, then the soft water returns to the hot water intermediate tank 9, then the hot water is continuously circulated for heating, after the temperature of the hot water reaches 70 ℃, the soft water is sent into a heating chamber of a potassium perchlorate mother liquor evaporator 10 to indirectly exchange heat with potassium perchlorate mother liquor, hot water at 60 ℃ coming out of the heating chamber of the potassium perchlorate mother liquor evaporator 10 returns to the hot water intermediate tank 9, the hot water is sent into the water source heat pump condenser 7 again by the hot water intermediate tank pump 8, and after absorbing the heat of the refrigeration medium, the soft water is sent into the potassium perchlorate mother liquor evaporator 10 to; after the water temperature is reduced, closing the main path of the circulating water path at the use side, and opening the branch path of the circulating water path at the use side to ensure that the water path circulates through a hot water intermediate tank 9, a hot water intermediate tank pump 8, a water source heat pump condenser 7 and the hot water intermediate tank 9; when the temperature reaches 70 ℃, the water path between the water source heat pump condenser 7 and the hot water intermediate tank 9 is closed, the water path between the water source heat pump condenser 7 and the potassium perchlorate mother liquor evaporator 10 is opened, and the circulation of the main path of the using side circulating water path through the hot water intermediate tank 9, the hot water intermediate tank pump 8, the water source heat pump condenser 7, the potassium perchlorate mother liquor evaporator 10 and the hot water intermediate tank 9 is also opened.
In order to better monitor the temperature, a temperature sensor is arranged on a pipeline between the water source heat pump evaporator 6 and the potassium chloride dissolving tank 1. Preferably, a temperature sensor is arranged on a pipeline between the water source heat pump condenser 7 and the potassium perchlorate mother liquor evaporator 10.
Preferably, a thermometer, a flowmeter and a pressure gauge are arranged on the water source side circulating water passage. The main circuit of the using side circulating water passage and the branch circuit of the using side circulating water passage are respectively provided with a thermometer, a flowmeter and a pressure gauge.
The water source heat pump unit of the invention can be provided with a plurality of automatic controls and protections, which mainly comprises:
(1) the temperature, flow, pressure field and remote display of the water source side.
(2) Water source side flow is insufficient and cutoff protection is achieved;
(3) side temperature, flow, pressure site and remote display are used.
(4) Use of side stream starvation and cutoff protection;
(5) alarming leakage of the heat exchanger at the water source side;
(6) using a side heat exchanger leakage alarm;
(7) when the temperature of the use side reaches the design temperature, the machine is automatically stopped at 70 ℃, and when the temperature is reduced to the lowest use temperature, the machine is automatically started at 60 ℃. The upper and lower temperature limits can be set by themselves.
(8) Displaying the suction pressure, the discharge pressure and the temperature of the compressor;
(9) and displaying the oil temperature of the compressor.
(10) And (6) intelligently detecting and displaying faults. Real-time faults can be automatically detected and historical faults can be checked.
All detection, control, alarm and operation of the unit are on an instrument control panel, full-automatic control is realized, operation is very convenient, and unattended operation is realized.
The invention also provides a process method of the device for the potassium perchlorate mother liquor evaporation concentration process, which uses the device for the potassium perchlorate mother liquor evaporation concentration process and comprises the following steps:
s1, absorbing the circulating water in the circulating water passage at the water source side from the cold water pool 3, entering a sodium perchlorate electrolysis intermediate liquid heat exchanger 5 through a pressure water pump 4 for heat exchange and temperature rise, entering a water source heat pump evaporator 6 for temperature reduction, then returning to the potassium chloride dissolving tank 1 for further temperature reduction, entering a water cooling tower 2 for cooling, and then returning to the cold water pool 3 to complete the primary circulation of the circulating water passage at the water source side;
opening a using side circulating water passage branch, sending circulating water from the hot water intermediate tank 9 to the water source heat pump condenser 7 through a hot water pump, heating, and then sending the circulating water back to the hot water intermediate tank 9 for circulating heating to a specified temperature;
s2, closing the branch of the using side circulating water passage, and opening the main path of the using side circulating water passage to make the circulating water return to the hot water intermediate tank 9 along the hot water intermediate tank 9, the hot water intermediate tank pump 8, the water source heat pump condenser 7 and the potassium perchlorate mother liquor evaporator 10 to complete the circulation of the water passage;
s3, after the temperature of the condensed water in the main path of the using side circulating water path is reduced to a specific temperature, the main path of the using side circulating water path is closed, and a branch of the using side circulating water path is opened;
s4 loops through steps S1-S3.
Preferably, the specified temperature described in the step of S1 is 70 ℃.
Preferably, the specific temperature described in step S3 is 60 ℃.
Example one
The process method of the device for the potassium perchlorate mother liquor evaporation concentration process uses the device for the potassium perchlorate mother liquor evaporation concentration process and comprises the following steps:
s1, absorbing the circulating water in the circulating water passage at the water source side from the cold water pool 3, entering a sodium perchlorate electrolysis intermediate liquid heat exchanger 5 through a pressure water pump 4 for heat exchange and temperature rise, entering a water source heat pump evaporator 6 for temperature reduction, then returning to the potassium chloride dissolving tank 1 for further temperature reduction, entering a water cooling tower 2 for cooling, and then returning to the cold water pool 3 to complete the primary circulation of the circulating water passage at the water source side; the elevating temperature is kept between 39 and 45 ℃.
Opening a using side circulating water passage branch, sending circulating water from the hot water intermediate tank 9 to the water source heat pump condenser 7 through a hot water pump, heating, and then sending the circulating water back to the hot water intermediate tank 9 for circulating heating to about 60 ℃;
s2, closing the branch of the using side circulating water passage, and opening the main path of the using side circulating water passage to make the circulating water return to the hot water intermediate tank 9 along the hot water intermediate tank 9, the hot water intermediate tank pump 8, the water source heat pump condenser 7 and the potassium perchlorate mother liquor evaporator 10 to complete the circulation of the water passage;
s3, after the temperature of the condensed water in the main path of the using side circulating water path is reduced to about 45 ℃, the main path of the using side circulating water path is closed, and the branch path of the using side circulating water path is opened;
s4 loops through steps S1-S3.
Wherein the cold water flow of the water source heat pump condenser 7 is 99.7m3/h, the resistance is less than or equal to 80Kpa, and the pipe diameter is DN 150; wherein the cold water flow of the water source heat pump evaporator 6 is 122.7m3/h, the resistance is less than or equal to 80Kpa, and the pipe diameter is DN 150.
The following high-temperature water source heat pump operation record table 1 is obtained
TABLE 1 high-temp. water source heat pump operation recording table
After average numerical value calculation is carried out according to the data in the table 1, the following unit heating working condition performance operation table 2 is obtained
TABLE 2 Unit heating condition performance operation table
In table 2:
input power is current × voltage × 1.732 × power factor ÷ 1000
Heating capacity is water flow rate, inlet and outlet temperature difference and specific heat of water, x 1.163
Energy efficiency ratio (heating capacity KW)/actual power KW of unit
According to the data in the table 2, the average power consumption of the unit is 203.35KWH per hour, the heat generated by heating is equivalent to the heat generated by a 1105.4KWH electric food warmer, namely 902.05KWH is saved per hour, the electricity is saved by 649.5 ten thousand degrees according to the calculation of running for 300 days all year round, the value is 227 ten thousand yuan, and the economic benefit is very obvious.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (8)
1. The utility model provides a device that is used for potassium perchlorate mother liquor evaporation concentration technology which characterized in that: comprises a water source side circulating water passage and a use side circulating water passage main passage; the water source side circulating water passage sequentially passes through a potassium chloride dissolving tank, a water cooling tower, a water cooling tank, a pressurized water pump, a sodium chlorate electrolysis intermediate liquid heat exchanger and a water source heat pump evaporator and then returns to the potassium chloride dissolving tank to complete the circulation of the water passage; the main path of the using side circulating water path sequentially passes through a hot water intermediate tank, a hot water intermediate tank pump, a water source heat pump condenser and a potassium perchlorate mother liquor evaporator and then returns to the hot water intermediate tank to complete circulation of the water path; a using side circulating water passage branch for communicating the two devices is arranged between the water source heat pump condenser and the hot water intermediate tank; and the water source heat pump evaporator exchanges heat with a water source in the water source heat pump condenser.
2. The device for the evaporation concentration process of the potassium perchlorate mother liquor according to the claim 1 is characterized in that: and a temperature sensor is arranged on a pipeline between the water source heat pump evaporator and the potassium chloride dissolving tank.
3. The device for the evaporation concentration process of the potassium perchlorate mother liquor according to the claim 1 is characterized in that: and a temperature sensor is arranged on a pipeline between the water source heat pump condenser and the potassium perchlorate mother liquor evaporator.
4. The device for the evaporation concentration process of the potassium perchlorate mother liquor according to the claim 1 is characterized in that: and a thermometer, a flowmeter and a pressure gauge are arranged on the circulating water passage on the water source side.
5. The device for the evaporation concentration process of the potassium perchlorate mother liquor according to the claim 1 is characterized in that: the main path of the using side circulating water passage is provided with a thermometer, a flowmeter and a pressure gauge.
6. A process method of a device for a potassium perchlorate mother liquor evaporation concentration process is characterized by comprising the following steps: the device for the evaporation concentration process of the potassium perchlorate mother liquor, which is used according to claim 1, comprises the following steps:
s1, absorbing the circulating water in the water source side circulating water passage from a cold water pool, entering a sodium perchlorate electrolysis intermediate liquid heat exchanger through a pressure water pump for heat exchange and temperature rise, entering a water source heat pump evaporator for temperature reduction, then returning to a potassium chloride dissolving tank for further temperature reduction, entering a cold water tower for cooling, and then returning to the cold water pool for completing primary circulation of the water source side circulating water passage;
opening a using side circulating water passage branch, sending circulating water from the hot water intermediate tank to the water source heat pump condenser through the hot water pump, heating, and then sending the circulating water back to the hot water intermediate tank to circularly heat to a specified temperature;
s2, closing the branch of the using side circulating water passage, and opening the main path of the using side circulating water passage to make the circulating water return to the hot water intermediate tank along the hot water intermediate tank, the hot water intermediate tank pump, the water source heat pump condenser and the potassium perchlorate mother liquor evaporator to complete the circulation of the water passage;
s3, after the temperature of the condensed water in the main path of the using side circulating water path is reduced to a specific temperature, the main path of the using side circulating water path is closed, and a branch of the using side circulating water path is opened;
s4 loops through steps S1-S3.
7. The process method of the device for the evaporation concentration process of the potassium perchlorate mother liquor, which is characterized by comprising the following steps: the specified temperature described in the step S1 was 70 ℃.
8. The process method of the device for the evaporation concentration process of the potassium perchlorate mother liquor, which is characterized by comprising the following steps: the specific temperature described in the step S3 was 60 ℃.
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| CN112064055A (en) * | 2020-09-03 | 2020-12-11 | 耒阳金悦科技发展有限公司 | High-grade potassium chlorate production system |
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